i want to know if one, the z28 rearend is posi traction, and two, if it would be worth changing out the ends?... i plan on buying a new(er) engine or building mine up.. i just need some input

 

some of them are. it was an option. look on the RPO codes for the code G80(limited slip) and i think it is worth it seenin as how ull have both tires getting power instead of 1.

 

so should it drop right in? thank you by the way

 

Well if you are buying the Z28 rear axle I would open it up and check what gear ratio (stamped on OD of dr gear) and check for a Limited slip ( check picture). I would not waste the money if it is a 2:73 like the one in the RS. They are both 10-bolts and will bolt right in. You did not give a lot of info on the Z28 rear axle to really give you a good opinion if it is worth it. Ratio, brakes and etc.

 

i havent had a chance to get to it yet. sorry. but thanks again. what is the better ratio on the z's rear?

 

Only ratios available (year unknown) that are improvement are 3:23 & 3:42 (10-bolt)....